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PostgreSQL operator ||.

PostgreSQL operator || allows combining 2 or more lines together….

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Oracle: rights and access to the database.

Immediately after the creation of users in the database, the need to manage their access to various data objects arises. For example, an employee of t…

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PostgreSQL substring function.

PostgreSQL substring function allows extracting substring from a string….

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PostgreSQL replace function.

The PostgreSQL replace function replaces all occurrences of the specified string….

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PostgreSQL position function.

The PostgreSQLpositionfunctionreturns the substring location in a string….

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